Apparatus and method for controlling inter-process buffer, and program and storage medium realizing the same

A program for causing a computer to function as all or part of a first buffer controlling section, a second buffer controlling section, and a statistical processing section which constitute an inter-process buffer controlling apparatus, wherein:

• said first buffer controlling section is a section for increasing a size of a first buffer to be used for storing subjects of predetermined work when one of a difference and a ratio between a variance of first intervals and a variance of duration exceeds a prescribed first threshold value, said first intervals being intervals with which said subjects are delivered to said first buffer, said duration being a duration taken for completing a preceding process in which said subjects are generated and delivered to said first buffer;
• said second buffer controlling section is a section for decreasing the size of said first buffer when one of a difference and a ratio between an average of second intervals and an average of said first intervals exceeds a prescribed second threshold value, said second intervals being intervals with which a result of said predetermined work is delivered to a second buffer for storing subjects of work succeeding said predetermined work;
• and
• said statistical processing section is a section for repeatedly determining the variance and the average of said first intervals, the variance of said duration, and the average of said second intervals.

A computer-readable storage medium on which a program for causing a computer to function as all or part of a first buffer controlling section, a second buffer controlling section, and a statistical processing section is recorded, said first buffer controlling section, said second buffer controlling section, and said statistical processing section constituting an inter-process buffer controlling apparatus, wherein:

• said first buffer controlling section is a section for increasing a size of a first buffer to be used for storing subjects of predetermined work when one of a difference and a ratio between a variance of first intervals and a variance of duration exceeds a prescribed first threshold value, said first intervals being intervals wit which said subjects are delivered to said first buffer, said duration being a duration taken for completing a preceding process in which said subjects are generated and delivered to said first buffer;
• said second buffer controlling section is a section for decreasing the size of said first buffer when one of a difference and a ratio between an average of second intervals and an average of said first intervals exceeds a prescribed second threshold value, said second intervals being intervals with which a result of said predetermined work is delivered to a second buffer for storing subjects of work succeeding said predetermined work;
• and
• said statistical processing section is a section for repeatedly determining the variance and the average of said first intervals, the variance of said duration, and the average of said second intervals.